.container {
    width: 100%;
    height: 3800px;
}

.nav-right {
    /* margin-top: 2px; */
    height: 100px;
}

.nav-right ul li {
    position: relative;
}

.nav-right li .pull-down {
    position: absolute;
    left: 0;
    top: -50px;
    width: 60.91px;
    height: 50px;
    border-radius: 10px;
    background-color: #fff;
    text-align: center;
    box-shadow: 2px 2px 21px rgb(48 48 48 / 16%);
    overflow: hidden;
    display: none;
    transition: all 4s linear;
}

.nav-right ul li .pull-down a {
    font-size: 9.96px;
    /* display: block; */
    margin-top: 6px;
    margin-right: 3px;
}

.nav-right ul li:hover .pull-down {
    display: block;
    transform: translateY(69px);
}

.content-one {
    width: 100%;
    height: 690px;
}

.content-one img {
    width: 100%;
    height: 690px;
}

.content-two {
    width: 1200px;
    height: 176px;
    margin: auto
}

.content-two p:first-child {
    font-size: 41px;
    text-align: center;
    font-weight: 600;
    margin-top: 80px;
}

.content-two p:nth-child(2) {
    font-size: 18px;
    text-align: center;
    margin-top: 20px;
}

.content-two p:nth-child(2) span {
    font-size: 18px;
    color: coral;
}

.content-three {
    width: 1200px;
    height: 298px;
    margin: auto;
}

.content-three ul {
    display: flex;
    justify-content: space-between;
}

.content-three ul li {
    width: 338px;
    height: 298px;
    background: url(../imgs/精品课程/背景.png) no-repeat;
    background-size: 100% 100%;
}

.content-three-top {
    margin-top: 28px;
}

.content-three-top p {
    text-align: center;
    color: tomato;
}

.content-three-top p:first-child {
    margin-bottom: 24px;
    font-size: 18px;
}

.content-three-btn {
    margin-top: 65px;
}

.content-three-btn p {
    text-align: center;
}

.content-three ul li {
    position: relative;
}

.content-three ul li::after {
    content: "";
    width: 88px;
    height: 1px;
    background-color: tomato;
    position: absolute;
    top: 147px;
    left: 126px;
}

.content-three ul li:hover {
    /* 模糊效果 */
    opacity: 0.6;
}

.content-four {
    width: 100%;
    height: 1700px;
}

.content-five {
    width: 1200px;
    height: 438px;
    margin: auto;
}

.content-five p:first-child {
    font-size: 41px;
    font-weight: 600;
    text-align: center;
    margin-top: 84px;
}

.content-five p:nth-child(2) {
    font-size: 18px;
    text-align: center;
    margin-top: 12px;
}

.content-five ul {
    display: flex;
    justify-content: center;
    margin-top: 55px;
}

.content-five ul li {
    width: 188px;
    height: 188px;
    background: url(../imgs/精品课程/圆背景.png);
    background-size: 100% 100%;
    margin-left: 45px;
}

.content-five ul li p:first-child {
    font-size: 18px;
    font-weight: 900;
    margin-top: 196px;
    color: tomato;
}

.content-five ul li p:nth-child(2) {
    font-size: 12px;
    font-weight: 300;
    margin-top: 6px;
    color: tomato;
}

.content-five ul li p:nth-child(3) {
    font-size: 12px;
    font-weight: 300;
    margin-top: 6px;
    text-align: center;
    color: tomato;
}

.content-five ul li:hover {
    width: 188px;
    height: 188px;
    background: url(../imgs/精品课程/方背景.png);
    background-size: 100% 100%;
    margin-left: 45px;
}

.content-six {
    text-align: center;
}

.content-six img {
    width: 1200px;
    height: 363px;
}

.content-six ul {
    display: flex;
    justify-content: center;
}

.content-six ul li {
    width: 11px;
    height: 11px;
    background-color: #CECECE;
    border-radius: 50%;
    margin: 20px 20px 0 0;
}

.content-six ul li:nth-child(2) {
    background-color: #ea7b13;
}

.content-seven {
    width: 1200px;
    height: 900px;
    margin: auto;
}

.content-seven p:first-child {
    font-size: 41px;
    font-weight: 600;
    text-align: center;
    margin-top: 30px;
    color: #636363;
}

.content-seven p:nth-child(2) {
    font-size: 18px;
    font-weight: 100;
    text-align: center;
    margin-top: 20px;
}

.content-seven-img {
    background: url(../imgs/精品课程/多球背景图.png);
    margin-top: 31px;
    height: 680px;
    background-size: 100% 100%;
}

.content-eight {
    width: 1200px;
    height: 180px;
    margin: auto;
}

.content-eight p:first-child {
    font-size: 41px;
    font-weight: 600;
    text-align: center;
    margin-top: 30px;
    color: #636363;
}

.content-eight p:nth-child(2) {
    font-size: 18px;
    font-weight: 100;
    text-align: center;
    margin-top: 20px;
}

.content-nine {
    width: 1200px;
    height: 654px;
    margin: auto;
}

.content-nine-cot {
    width: 1000px;
    height: 492px;
    box-shadow: 2px 2px 21px rgb(48 48 48 / 16%);
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    margin-left: 105px;
}

.content-nine-left {
    width: 204px;
    height: 424px;
    margin-left: 60px;
    margin-top: 30px;
}

.content-nine-right {
    width: 661px;
    height: 424px;
    background: #f3f5f6;
    margin-top: 30px;
    margin-right: 20px;
}

.content-nine-right img {
    width: 632px;
    height: 356px;
}

.content-nine-left ul li {
    display: flex;
    height: 35px;
    margin-bottom: 25px;
}

.content-nine-left ul li div:first-child {
    width: 71.38px;
    background: #f3f3f3;
    text-align: center;
    border-radius: 4px 0px 0px 4px;
    line-height: 35px;
}

.content-nine-left ul li div:nth-child(2) {
    width: 133.63px;
    background: #e6e6e6;
    color: #9e9e9e;
    padding-left: 15px;
    box-sizing: border-box;
    border-radius: 0px 4px 4px 0px;
    line-height: 35px;
    font-size: 12px;
}

.contern-eleven {
    width: 1200px;
    height: 586px;
    margin: auto;
}

.contern-eleven p:first-child {
    text-align: center;
    font-size: 41.5px;
    font-weight: 700;
    color: #636363;
}

.contern-eleven p:nth-child(2) {
    text-align: center;
    font-size: 41.5px;
    font-weight: 700;
    color: #636363;
}

.contern-eleven-bck {
    height: 330px;
    background: url(../imgs/精品课程/技巧背景图.png);
    background-size: 100% 100%;
    margin-top: 25px;
    position: relative;
}

.contern-eleven-top {
    height: 88px;
    display: flex;
    justify-content: space-between;
    padding-top: 40px;
}

.contern-eleven-top {
    margin-top: 12px;
}

.contern-eleven-top1 {
    margin-left: 96px;
}

.contern-eleven-top1 span:first-child {
    font-size: 18px;
    font-weight: 700;
}

.contern-eleven-top1 span:nth-child(2) {
    font-size: 14px;
    font-weight: 300;
}

.contern-eleven-btm1 {
    display: flex;
    justify-content: space-between;
    margin-top: 111px;
}

.content-twelve {
    width: 1200px;
    height: 1376px;
    margin: auto;
}

.content-twelve .content-twelve-p {
    font-weight: 700;
    color: #636363;
    font-size: 50px;
    text-align: center;
    margin-bottom: 55px;
}


/* 总p设置 */

.content-twelve p {
    /* text-align: center; */
    margin-bottom: 32px;
    padding-left: 60px;
}


/* 儿子手法 */

.content-twelve-cot {
    height: 1124px;
    display: flex;
}

#content-twelve-cot {
    height: 40px;
}

.content-twelve-cot ul:first-child {
    background-color: #fe6666;
    border-radius: 10px 10px 0 0;
}

.content-twelve-cot ul:nth-child(2) {
    box-shadow: 3px 3px 25px rgb(0 0 0 / 25%);
    margin-top: 23px;
    border-radius: 10px;
    position: relative;
}

.content-twelve-cot ul:first-child li {
    width: 576px;
}

.content-twelve-cot ul:nth-child(2) li {
    width: 575px;
}

.content-twelve-cot ul li:first-child p {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:first-child p {
    font-size: 32px;
    color: #f3f3f3;
    text-align: center;
    padding-left: 0;
}

.content-twelve-cot ul li:nth-child(2) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(2) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(3) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(3) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(4) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(4) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(5) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(5) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(6) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(6) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(7) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(7) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(8) p:first-child {
    font-size: 32px;
    color: #f3f3f3;
}

.content-twelve-cot ul li:nth-child(8) p:nth-child(2) {
    font-size: 18px;
    color: #f3f3f3;
    border-bottom: 1px solid #ffff;
}

.content-twelve-cot ul li:nth-child(9) {
    height: 60px;
    background-color: #fe6666;
    border-radius: 0 0 10px 10px;
}

.content-twelve-cot ul:nth-child(2) li:first-child p {
    color: black;
    font-size: 32px;
}


/* 右边 */

.content-twelve-cot ul:nth-child(2) li:nth-child(2) p:first-child {
    font-size: 32px;
    color: black;
}

.content-twelve-cot ul:nth-child(2) li:nth-child(2) p:nth-child(2) {
    font-size: 18px;
    color: black;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(3) p:first-child {
    font-size: 32px;
    color: black;
}

.content-twelve-cot ul:nth-child(2) li:nth-child(3) p:nth-child(2) {
    font-size: 18px;
    color: black;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(4) p:first-child {
    font-size: 32px;
    color: black;
}

.content-twelve-cot ul:nth-child(2) li:nth-child(4) p:nth-child(2) {
    font-size: 18px;
    color: black;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(5) {
    height: 143px;
    padding-top: 4px;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(6) {
    height: 143px;
    padding-top: 10px;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(7) p:first-child {
    font-size: 32px;
    color: black;
}

.content-twelve-cot ul:nth-child(2) li:nth-child(7) p:nth-child(2) {
    font-size: 18px;
    color: black;
    border-bottom: 1px solid rgb(176, 171, 171);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(5)::after {
    content: "";
    width: 500px;
    height: 2px;
    background-color: rgb(176, 171, 171);
    position: absolute;
    top: 686px;
    left: 286px;
    transform: translateX(-50%) rotate(-5deg);
}

.content-twelve-cot ul:nth-child(2) li:nth-child(6)::before {
    content: "";
    width: 500px;
    height: 2px;
    background-color: rgb(176, 171, 171);
    position: absolute;
    top: 861px;
    left: 286px;
    transform: translateX(-50%) rotate(-5deg);
}

.teacher-content {
    width: 100%;
    height: 460px;
    background: url(../imgs/精品课程/教师介绍背景.png) no-repeat;
    background-size: 100% 100%;
}

.teacher-content p:first-child {
    text-align: center;
    font-size: 21px;
    font-weight: 600;
    color: #fff;
    padding-top: 50px;
}

.teacher-content p:nth-child(2) {
    text-align: center;
    font-size: 14px;
    font-weight: 300;
    color: #fff;
}


/* 教师队伍 */

.teacher-content li:hover {
    transform: translateY(-8px)
}

.teacher-content ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.teacher-content ul li {
    width: 239px;
    height: 302px;
    overflow: hidden;
    position: relative;
    transition: all .1s linear;
}

.teacher-content ul li img {
    width: 239px;
    height: 302px;
}

.teacher-content ul li div {
    width: 179px;
    height: 314px;
    /* // background-color: #08090A; */
    display: inline-block;
    position: absolute;
    top: 180px;
    left: 30px;
    border-radius: 8px;
    font-size: 14px;
    transition: all .6s linear;
    /* // box-shadow:0px 3px 6px rgb(44 84 252 / 16%) ; */
    background-color: rgba(0, 0, 0, 0.5);
    color: #ffffff;
}

.teacher-content ul li p span {
    color: #F76F44;
}

.teacher-content ul div:hover {
    display: inline-block;
    position: absolute;
    top: 24px;
    /* // left: 30px; */
}